FR2966120A1 - Embarked device for blocking pivoting shaft of transport carriage in indexed lowered position to transport parts of automobile, has releasing unit releasing blocking of shaft in sliding of ground support position - Google Patents

Embarked device for blocking pivoting shaft of transport carriage in indexed lowered position to transport parts of automobile, has releasing unit releasing blocking of shaft in sliding of ground support position Download PDF

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Publication number
FR2966120A1
FR2966120A1 FR1058417A FR1058417A FR2966120A1 FR 2966120 A1 FR2966120 A1 FR 2966120A1 FR 1058417 A FR1058417 A FR 1058417A FR 1058417 A FR1058417 A FR 1058417A FR 2966120 A1 FR2966120 A1 FR 2966120A1
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FR
France
Prior art keywords
drawbar
carriage
slider
blocking
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR1058417A
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French (fr)
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FR2966120B1 (en
Inventor
Eric Maillard
Samuel Faivre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrie de Thermoformage et Mecano Soudure SA
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Industrie de Thermoformage et Mecano Soudure SA
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Priority to FR1058417A priority Critical patent/FR2966120B1/en
Publication of FR2966120A1 publication Critical patent/FR2966120A1/en
Application granted granted Critical
Publication of FR2966120B1 publication Critical patent/FR2966120B1/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/14—Draw-gear or towing devices characterised by their type
    • B60D1/143—Draw-gear or towing devices characterised by their type characterised by the mounting of the draw-gear on the towed vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
    • B60D1/36—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for facilitating connection, e.g. hitch catchers, visual guide means, signalling aids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
    • B60D1/42—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable
    • B60D1/46—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable vertically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/04—Braking mechanisms; Locking devices against movement
    • B62B5/049—Braking mechanisms; Locking devices against movement locking against movement by contacting the floor or a wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/30—Increase in
    • B60B2900/331—Safety or security
    • B60B2900/3312—Safety or security during regular use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/50—Improvement of
    • B60B2900/531—User-friendliness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2900/00—Purpose of invention
    • B60B2900/50—Improvement of
    • B60B2900/551—Handling of obstacles or difficult terrains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D2001/001—Traction couplings; Hitches; Draw-gear; Towing devices specially adapted for use on vehicles other than cars
    • B60D2001/005—Traction couplings; Hitches; Draw-gear; Towing devices specially adapted for use on vehicles other than cars for carts, scooters, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/0026—Propulsion aids
    • B62B5/0079—Towing by connecting to another vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/04—Braking mechanisms; Locking devices against movement
    • B62B5/0433—Braking mechanisms; Locking devices against movement foot operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/06—Hand moving equipment, e.g. handle bars
    • B62B5/063—Hand moving equipment, e.g. handle bars for low-lift hand trucks

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Loading Or Unloading Of Vehicles (AREA)
  • Agricultural Machines (AREA)

Abstract

The device has a slider (4) mounted in a guide bearing (5) that is connected to a frame (3') of a carriage. The slider comprises a ground support bottom (6). The slider is provided with a retractable blocking unit (7) and a releasing unit. The retractable blocking unit retractably blocks a shaft (2) in a partially lowered position depending on a sliding position of the slider in a support on ground. The releasing unit releases the blocking of the shaft in sliding of the ground support position.

Description

DESCRIPTION DESCRIPTION

La présente invention concerne le domaine des équipements de transport et de manutention, plus particulièrement les chariots utilisés pour transporter des pièces au niveau des sites de montage automobile ou autre, et a pour objet un dispositif de blocage en position indexée d'un timon de chariot et un chariot équipé d'un tel dispositif. Parmi les chariots de transport utilisés dans les sites de montage notamment, on connaît en particulier les chariots du type comportant des roues centrales positionnées légèrement plus bas que des roues d'extrémité, permettant ainsi un léger basculement du chariot autour d'un axe transversale, perpendiculaire à l'axe longitudinal du timon fixé à l'extrémité avant de ces chariots. Ces timons sont généralement équipés de moyens de rappel du type ressort, qui assurent leur relèvement automatique dans une position escamotée sensiblement verticale. The present invention relates to the field of transport and handling equipment, more particularly the trolleys used to transport parts at automobile assembly sites or the like, and relates to a locking device in the indexed position of a trolley shaft. and a carriage equipped with such a device. Among the transport trolleys used in assembly sites in particular, trolleys of the type having central wheels positioned slightly lower than end wheels are known in particular, thus allowing the carriage to tilt slightly about a transverse axis. perpendicular to the longitudinal axis of the drawbar attached to the front end of these carriages. These drawbars are generally equipped with return means of the spring type, which ensure their automatic recovery in a substantially vertical retracted position.

Compte tenu de la possibilité de basculement du chariot, l'opérateur est généralement obligé de régler manuellement la position du timon pour permettre de réaliser l'accrochage de ce dernier dans un site complémentaire d'un chariot précédent d'une file de chariots ou d'un tracteur. Given the possibility of tilting of the truck, the operator is usually obliged to manually adjust the position of the drawbar to allow the hooking of the latter in a complementary site of a previous carriage of a queue of carts or docks. a tractor.

Ce réglage en position peut être fastidieux et demander un effort important à l'opérateur. De plus, la nécessité d'un tel réglage ne permet pas à un opérateur unique de réaliser l'accrochage sans quitter son poste de conduite (accrochage automatique du chariot par simple mouvement de recul du tracteur). This adjustment in position can be tedious and require significant effort to the operator. In addition, the need for such an adjustment does not allow a single operator to perform the attachment without leaving his driving position (automatic attachment of the truck by simple movement of the tractor back).

La présente invention a pour objet de proposer une solution simple, préférentiellement entièrement mécanique et sans nécessiter de système ou de dispositif séparé additionnel, au problème exposé ci-dessus. A cet effet, la présente invention a pour objet un dispositif embarqué de blocage en position abaissée indexée d'un timon pivotant d'un chariot, en particulier d'un chariot apte à basculer autour d'un axe perpendiculaire audit timon, ledit timon étant sollicité en position relevée préférentiellement de manière élastique ou par action d'un ressort. Ce dispositif est caractérisé en ce qu'il comprend un coulisseau monté, avec faculté de coulissement guidé selon une direction sensiblement -2- verticale, dans au moins un palier de guidage solidaire du châssis du chariot et comportant un pied d'appui au sol, ledit coulisseau étant en outre pourvu, d'une part, d'un moyen escamotable de blocage du timon dans une position au moins partiellement abaissée fonction de la position en coulissement du coulisseau en appui au sol et, d'autre part, un moyen libérable de blocage en coulissement du coulisseau en position d'appui au sol. L'invention sera mieux comprise, grâce à la description ci-après, qui se rapporte à un mode de réalisation préféré, donné à titre d'exemple non limitatif, et expliqué avec référence aux dessins schématiques annexés, dans lesquels : Les figures lA et 1B sont des vues générales en perspective d'un chariot de transport et/ou de manutention équipé d'un dispositif embarqué de blocage indexé du timon selon l'invention (seul le châssis du chariot est représenté) ; La figure 2 est une vue partielle en perspective de la partie avant du chariot montrant le dispositif selon l'invention et illustrant la position repliée verticale et la position partiellement abaissée du timon, avec blocage par le dispositif selon l'invention ; La figure 3 est une vue de détail en perspective selon une autre direction de l'objet de la figure 2 ; La figure 4 est une vue de détail en perspective de la partie avant du chariot, le timon étant relevé et le dispositif selon l'invention étant en position repliée, non active, et, Les figures 5 et 6 sont des vues de détail en perspective, à une autre échelle, et selon deux directions différentes, de la partie avant du chariot représenté sur la figure 4. Les figures des dessins annexés montrent un dispositif 1 embarqué de blocage en position abaissée indexée d'un timon 2 pivotant d'un chariot 3, en particulier d'un chariot apte à basculer autour d'un axe X perpendiculaire audit timon, ledit timon 2 étant sollicité en position relevée préférentiellement de manière élastique ou par action d'un ressort 2'. Conformément à l'invention, ce dispositif 1 comprend un coulisseau 4 monté, avec faculté de coulissement guidé selon une direction sensiblement verticale, dans au moins un palier de guidage 5 solidaire du châssis 3' du chariot 3 et comportant un pied 6 d'appui au sol, ledit coulisseau 4 étant en outre pourvu, d'une part, d'un moyen 7 escamotable de blocage du timon 2 dans une position au moins partiellement abaissée -3- fonction de la position en coulissement du coulisseau 4 en appui au sol et, d'autre part, un moyen 8 libérable de blocage en coulissement du coulisseau en position d'appui au sol. Ainsi, en bloquant le mouvement de relèvement du timon 2 sous l'action de son ressort 2', en une position déterminée indexée par rapport au sol, le dispositif 1 garantit un positionnement précis et fiable de l'extrémité d'accrochage 13 du timon 2, en particulier un maintien en position angulaire du timon 2 autour de son axe de pivotement, notamment après son décrochage ou désengagement du site complémentaire d'accrochage d'un chariot précédent ou d'un tracteur. Il sera alors possible de réaliser un nouvel accrochage ou réengagement du timon 2 sans avoir à le manipuler, sa position étant demeurée inchangée. Afin d'obtenir un désengagement du dispositif 1 avant déplacement du chariot 3 et d'éviter ainsi toute interférence avec le déplacement du chariot et tout endommagement du dispositif 1, ce dernier peut comprendre également un moyen 9 de libération automatique du blocage du coulisseau 4 en position d'appui au sol sous l'action d'une traction d'intensité suffisante sur le timon 2. The present invention aims to provide a simple solution, preferably entirely mechanical and without the need for additional system or separate device, the problem described above. For this purpose, the subject of the present invention is an on-board locking device in the indexed lowered position of a pivoting drawbar of a carriage, in particular of a carriage adapted to tilt around an axis perpendicular to said drawbar, said drawbar being biased in raised position preferably elastically or by action of a spring. This device is characterized in that it comprises a slide mounted, with sliding ability guided in a substantially-vertical direction, in at least one guide bearing integral with the chassis of the carriage and having a foot support on the ground, said slider being further provided, on the one hand, with a retractable means for locking the drawbar in a position at least partially lowered as a function of the sliding position of the slider resting on the ground and, on the other hand, a releasable means sliding blocking of the slide in ground support position. The invention will be better understood, thanks to the following description, which refers to a preferred embodiment, given by way of non-limiting example, and explained with reference to the appended diagrammatic drawings, in which: FIGS. 1B are general views in perspective of a transport trolley and / or handling equipped with an onboard device locking indexed drawbar according to the invention (only the frame of the carriage is shown); Figure 2 is a partial perspective view of the front portion of the carriage showing the device according to the invention and illustrating the vertical folded position and the partially lowered position of the drawbar, with locking by the device according to the invention; Figure 3 is a detail view in perspective in another direction of the object of Figure 2; FIG. 4 is a detailed perspective view of the front part of the carriage, the drawbar being raised and the device according to the invention being in the folded, non-active position, and FIGS. 5 and 6 are detailed perspective views. on another scale, and in two different directions, the front portion of the carriage shown in Figure 4. The figures of the accompanying drawings show a device 1 embedded locking in the indexed lowered position of a drawbar 2 pivoting a carriage 3, in particular a carriage adapted to tilt about an axis X perpendicular to said drawbar, said drawbar 2 being biased in the raised position preferably resiliently or by action of a spring 2 '. According to the invention, this device 1 comprises a slide 4 mounted, with sliding ability guided in a substantially vertical direction, in at least one guide bearing 5 integral with the frame 3 'of the carriage 3 and having a support foot 6 on the ground, said slider 4 being furthermore provided, on the one hand, with a retractable means 7 for locking the drawbar 2 in a position at least partially lowered as a function of the sliding position of the slider 4 resting on the ground and, on the other hand, a releasable means 8 for slidably locking the slider in the ground support position. Thus, by blocking the raising movement of the drawbar 2 under the action of its spring 2 ', in a determined position indexed relative to the ground, the device 1 ensures a precise and reliable positioning of the hooking end 13 of the drawbar 2, in particular a maintenance in angular position of the drawbar 2 about its pivot axis, in particular after its unhooking or disengagement of the complementary attachment site of a preceding carriage or a tractor. It will then be possible to make a new hooking or reengagement of the drawbar 2 without having to manipulate it, its position having remained unchanged. In order to obtain a disengagement of the device 1 before moving the carriage 3 and thus avoid any interference with the movement of the carriage and any damage to the device 1, the latter may also comprise a means 9 of automatic release of the locking of the slide 4 in ground support position under the action of sufficient traction on the drawbar 2.

En accord avec un mode de réalisation avantageux de l'invention, ressortant plus particulièrement des figures 2, 3, 5 et 6, le moyen libérable de blocage 8 consiste en une liaison crantée entre le coulisseau 3 et le châssis 3' du chariot 3 et le moyen 9 de libération automatique consiste en un mécanisme d'assemblage autorisant un déplacement relatif du coulisseau 4 par rapport au châssis 3' sous l'effet d'une traction suffisante sur le timon 2, entraînant un désengagement de la liaison crantée. De manière pratique, le coulisseau 4 peut être équipé d'une rampe crantée 8' (par exemple une plaque rapportée sur la tranche de laquelle des découpes en forme de crans ont été ménagées) sur laquelle peut venir en engagement une aile ou une came 8" solidaire du châssis 2', la liaison étant rompue en cas de traction sur le timon 2 par éloignement mutuel des deux composantes 8' et 8". Selon une caractéristique de l'invention ressortant plus particulièrement des figures 5 et 6 des dessins annexés, ledit au moins un palier de guidage 5 du coulisseau 4 est solidaire de la console de montage 2" du timon 2, laquelle est reliée au châssis 3' du chariot 3 par -4- l'intermédiaire du mécanisme d'assemblage 9 formant le moyen de libération automatique. Le mécanisme 9 peut, par exemple, consister en une liaison d'assemblage de la console 2" avec et en regard une plaque de fixation correspondante du châssis 3', qui autorise un déplacement limité et guidé de la console 2" dans la direction de déplacement du chariot 3 vers l'avant (avant déplacement effectif dudit chariot lors d'une traction), éventuellement à l'encontre d'une sollicitation élastique. En accord avec un mode pratique de réalisation du dispositif 1 selon l'invention, le moyen escamotable 7 de blocage du timon 2 consiste en un bras de levier 10 monté pivotant sur le coulisseau 4 et portant un doigt d'engagement 10' à son extrémité dirigée vers le timon 2, ledit bras de levier 10 étant sollicité élastiquement dans une position de blocage (position calée haute) dans laquelle le doigt d'engagement 10' interfère avec la course ou le trajet de pivotement du timon 2 et empêche un repliement (plus avant sous l'action du ressort 2') de ce dernier, en le maintenant ainsi dans une position déterminée indexée par rapport au sol, en particulier une position indexée en rotation autour de son axe de pivotement. Afin d'aboutir à un dégagement et un escamotage automatiques du coulisseau 4, évitant toute interférence lors du déplacement du chariot (possible accrochage au niveau du sol), le dispositif 1 peut comporter un moyen 11 de sollicitation vers une position repliée haute du coulisseau 4, lorsque le moyen libérable de blocage 8 est désengagé, par exemple sous la forme d'un ressort ou analogue. In accordance with an advantageous embodiment of the invention, more particularly apparent from FIGS. 2, 3, 5 and 6, the releasable blocking means 8 consists of a toothed connection between the slider 3 and the chassis 3 'of the carriage 3 and the means 9 of automatic release consists of an assembly mechanism allowing a relative movement of the slider 4 relative to the frame 3 'under the effect of sufficient traction on the drawbar 2, resulting in disengagement of the notched link. In practice, the slider 4 may be equipped with a toothed ramp 8 '(for example a plate attached to the edge of which notch-shaped cuts have been made) on which a wing or a cam 8 may engage. "integral with the frame 2 ', the connection being broken in case of pulling on the drawbar 2 by mutual distance of the two components 8' and 8". According to a feature of the invention more particularly apparent from Figures 5 and 6 of the accompanying drawings, said at least one guide bearing 5 of the slider 4 is integral with the mounting bracket 2 "of the drawbar 2, which is connected to the frame 3 ' the carriage 9 by means of the assembly mechanism 9 forming the automatic release means The mechanism 9 may, for example, consist of an assembly connection of the console 2 "with and opposite a plate of corresponding attachment of the frame 3 ', which allows a limited and guided movement of the console 2 "in the direction of movement of the carriage 3 forwards (before actual movement of said carriage during a traction), possibly against In accordance with a practical embodiment of the device 1 according to the invention, the retractable means 7 for locking the drawbar 2 consists of a lever arm 10 pivotally mounted on the slider 4 and carrying a lever. gt engagement 10 'at its end directed towards the drawbar 2, said lever arm 10 being resiliently biased into a locking position (high set position) in which the engagement finger 10' interferes with the stroke or the travel path pivoting of the drawbar 2 and prevents folding (further under the action of the spring 2 ') of the latter, thus maintaining it in a determined position indexed relative to the ground, in particular a position indexed in rotation about its axis of pivoting. In order to achieve automatic disengagement and retraction of the slider 4, avoiding any interference during the carriage movement (possible attachment at ground level), the device 1 may include a means 11 for biasing towards a high folded position of the slider 4 when the releasable locking means 8 is disengaged, for example in the form of a spring or the like.

En vue de pouvoir effectuer un ajustement de la position indexée après montage du dispositif 1 sur le chariot 3, il est avantageusement prévu que le pied d'appui 6 est réglable en longueur ou en extension par rapport au coulisseau 4. Ce pied d'appui 6 peut, par exemple, consister en une simple vis montée dans la partie inférieure du coulisseau 4. In order to be able to make an adjustment of the indexed position after assembly of the device 1 on the carriage 3, it is advantageously provided that the support foot 6 is adjustable in length or extension relative to the slide 4. This support foot 6 may, for example, consist of a single screw mounted in the lower part of the slider 4.

Selon une variante de réalisation avantageuse, et comme le montrent les figures des dessins annexés, le coulisseau 4 est guidé dans deux paliers 5 au moins, solidaires d'une platine 5' de fixation à la console de montage 2" du timon 2, ladite platine 5' étant, le cas échéant, pourvue d'un ergot de rabattement 5" déplaçant le moyen escamotable de blocage 7 dans une position dans laquelle il n'interfère pas avec la course de pivotement du timon 2, ce blocage intervenant à l'encontre d'une sollicitation élastique, par exemple fournie par un ressort 12. -5- La présente invention a également pour objet un chariot 3 de transport pourvu d'un timon 2 de tractage et de guidage, ledit chariot étant au moins légèrement basculant autour d'un jeu de roues centrales 3" et ledit timon étant sollicité élastiquement ou par ressort dans une position relevée. According to an advantageous embodiment variant, and as shown in the figures of the accompanying drawings, the slider 4 is guided in two bearings 5 at least, integral with a plate 5 'of attachment to the mounting bracket 2 "of the drawbar 2, said 5 'platen being, if necessary, provided with a 5 "folding pin moving the retractable locking means 7 in a position in which it does not interfere with the pivoting stroke of the drawbar 2, this blocking intervening at the against a resilient bias, for example provided by a spring 12. The present invention also relates to a carriage 3 provided with a drawbar 2 for towing and guiding, said carriage being at least slightly tilting around a set of central wheels 3 "and said drawbar being biased elastically or by spring in a raised position.

Ce chariot 3 est caractérisé en ce qu'il est équipé d'un dispositif embarqué de blocage 1 tel que décrit précédemment. De manière avantageuse, ledit chariot peut comporter également au moins une jambe d'appui escamotable 14, permettant de définir la position de basculement dudit chariot 3 à l'arrêt. This carriage 3 is characterized in that it is equipped with an onboard locking device 1 as described above. Advantageously, said carriage may also comprise at least one retractable support leg 14, for defining the tilting position of said carriage 3 at a standstill.

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et représenté aux dessins annexés. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention. Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims (10)

REVENDICATIONS1. Dispositif embarqué de blocage en position abaissée indexée d'un timon pivotant d'un chariot, en particulier d'un chariot apte à basculer autour d'un axe perpendiculaire audit timon, ledit timon étant sollicité en position relevée préférentiellement de manière élastique ou par action d'un ressort, dispositif (1) caractérisé en ce qu'il comprend un coulisseau (4) monté, avec faculté de coulissement guidé selon une direction sensiblement verticale, dans au moins un palier de guidage (5) solidaire du châssis (3') du chariot (3) et comportant un pied (6) d'appui au sol, ledit coulisseau (4) étant en outre pourvu, d'une part, d'un moyen (7) escamotable de blocage du timon (2) dans une position au moins partiellement abaissée fonction de la position en coulissement du coulisseau (4) en appui au sol et, d'autre part, un moyen (8) libérable de blocage en coulissement du coulisseau en position d'appui au sol. REVENDICATIONS1. Embedded locking device in the indexed lowered position of a pivoting drawbar of a carriage, in particular a carriage adapted to tilt about an axis perpendicular to said drawbar, said drawbar being biased in raised position preferably elastically or by action a spring, device (1) characterized in that it comprises a slide (4) mounted, with sliding ability guided in a substantially vertical direction, in at least one guide bearing (5) integral with the frame (3 ' ) of the carriage (3) and having a foot (6) ground support, said slider (4) being further provided, on the one hand, a means (7) retractable locking of the drawbar (2) in a position at least partially lowered as a function of the sliding position of the slider (4) resting on the ground and, on the other hand, a means (8) releasable sliding blocking of the slider in ground support position. 2. Dispositif selon la revendication 1, caractérisé en ce qu'il comprend également un moyen (9) de libération automatique du blocage du coulisseau (4) en position d'appui au sol sous l'action d'une traction d'intensité suffisante sur le timon (2). 2. Device according to claim 1, characterized in that it also comprises a means (9) for automatically releasing the blocking of the slide (4) in the ground support position under the action of traction of sufficient intensity on the drawbar (2). 3. Dispositif selon les revendications 1 et 2, caractérisé en ce que le moyen libérable de blocage (8) consiste en une liaison crantée entre le coulisseau (3) et le châssis (3') du chariot (3) et en ce que le moyen (9) de libération automatique consiste en un mécanisme d'assemblage autorisant un déplacement relatif du coulisseau (4) par rapport au châssis (3') sous l'effet d'une traction suffisante sur le timon (2), entraînant un désengagement de la liaison crantée. 3. Device according to claims 1 and 2, characterized in that the releasable locking means (8) consists of a toothed connection between the slide (3) and the frame (3 ') of the carriage (3) and that the means (9) for automatic release consists of an assembly mechanism allowing relative movement of the slider (4) relative to the chassis (3 ') under the effect of sufficient traction on the drawbar (2), resulting in disengagement of the notched link. 4. Dispositif selon la revendication 3, caractérisé en ce que ledit au moins un palier de guidage (5) du coulisseau (4) est solidaire de la console de montage (2") du timon (2), laquelle est reliée au châssis (3') du chariot (3) par l'intermédiaire du mécanisme d'assemblage (9) formant le moyen de libération automatique. 4. Device according to claim 3, characterized in that said at least one guide bearing (5) of the slider (4) is integral with the mounting bracket (2 ") of the drawbar (2), which is connected to the frame ( 3 ') of the carriage (3) via the assembly mechanism (9) forming the automatic release means. 5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le moyen escamotable (7) de blocage du timon (2) consiste en un bras de levier (10) monté pivotant sur le coulisseau (4) et portant un doigt d'engagement (10') à son extrémité dirigée vers le timon-7- (2), ledit bras de levier (10) étant sollicité élastiquement dans une position de blocage dans laquelle le doigt d'engagement (10') interfère avec la course de pivotement du timon (2) et empêche un repliement de ce dernier, en le maintenant ainsi dans une position déterminée indexée par rapport au sol, en particulier une position indexée en rotation autour de son axe de pivotement. 5. Device according to any one of claims 1 to 4, characterized in that the retractable means (7) for locking the shaft (2) consists of a lever arm (10) pivotally mounted on the slide (4) and carrying an engagement finger (10 ') at its end facing the drawbar-7- (2), said lever arm (10) being resiliently biased into a locking position in which the engagement finger (10') interferes with the pivoting stroke of the drawbar (2) and prevents a folding of the latter, thus maintaining it in a determined position indexed relative to the ground, in particular a position indexed in rotation about its pivot axis. 6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il comporte un moyen (11) de sollicitation vers une position repliée haute du coulisseau (4), lorsque le moyen libérable de blocage (8) est désengagé, par exemple sous la forme d'un ressort ou analogue. 6. Device according to any one of claims 1 to 5, characterized in that it comprises means (11) biasing to a folded up position of the slider (4), when the releasable locking means (8) is disengaged for example in the form of a spring or the like. 7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le pied d'appui (6) est réglable en longueur ou en extension par rapport au coulisseau (4). 7. Device according to any one of claims 1 to 6, characterized in that the support foot (6) is adjustable in length or extension relative to the slide (4). 8. Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le coulisseau (4) est guidé dans deux paliers (5) au moins, solidaires d'une platine (5') de fixation à la console de montage (2") du timon (2), ladite platine (5') étant, le cas échéant, pourvue d'un ergot de rabattement (5") déplaçant le moyen escamotable de blocage (7) dans une position dans laquelle il n'interfère pas avec la course de pivotement du timon (2), ce blocage intervenant à l'encontre d'une sollicitation élastique, par exemple fournie par un ressort (12). 8. Device according to any one of claims 1 to 7, characterized in that the slide (4) is guided in two bearings (5) at least, integral with a plate (5 ') for attachment to the mounting bracket (2 ") of the drawbar (2), said plate (5 ') being, if appropriate, provided with a drawdown pin (5") moving the retractable locking means (7) in a position in which it does not interfere with the pivoting stroke of the drawbar (2), this blocking acting against an elastic bias, for example provided by a spring (12). 9. Chariot de transport pourvu d'un timon de tractage, ledit chariot étant au moins légèrement basculant autour d'un jeu de roues centrales et ledit timon étant sollicité élastiquement ou par ressort dans une position relevée, chariot (3) caractérisé en ce qu'il est équipé d'un dispositif embarqué de blocage (1) selon l'une quelconque des revendications 1 à 8. 9. Transport trolley provided with a drawbar, said trolley being at least slightly tilting around a set of central wheels and said drawbar being biased elastically or by spring in a raised position, trolley (3) characterized in that it is equipped with an onboard locking device (1) according to any one of claims 1 to 8. 10. Chariot de transport selon la revendication 9, caractérisé en ce qu'il comporte également au moins une jambe d'appui escamotable (13), permettant de définir la position de basculement dudit chariot (3) à l'arrêt. 10. Transport trolley according to claim 9, characterized in that it also comprises at least one retractable support leg (13) for defining the tilting position of said carriage (3) at a standstill.
FR1058417A 2010-10-15 2010-10-15 LOCKING DEVICE IN POSITION OF A SWIVEL TIMER AND TROLLEY HAVING SUCH A DEVICE Expired - Fee Related FR2966120B1 (en)

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FR2996496A1 (en) * 2012-10-09 2014-04-11 Renault Sa Device for coupling towing- and tractor drawn vehicles, has indexing elements including retaining elements that co-act with fixing elements integrated with drawbar or attaching part in blocking state when drawbar is in active configuration
EP3023316A1 (en) * 2014-11-21 2016-05-25 K. Hartwall Oy AB Tow bar assembly and dolly comprising the same
DE102016013725A1 (en) * 2016-11-17 2018-05-17 FM SYSTEME FÖRDER- UND MONTAGETECHNIK Schmalzhofer GmbH Device for fixing a movable transport device and / or for coupling with units and traction devices of a transport system
US10562362B2 (en) * 2017-12-21 2020-02-18 Target Brands, Inc. Cage to cage locking mechanism
US11338834B2 (en) * 2018-07-23 2022-05-24 Pietro Laudani Lowered bidirectional trolley

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CN105438315A (en) * 2015-11-17 2016-03-30 徐工集团工程机械股份有限公司 Material transfer car for production of crawler crane

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FR2876957A1 (en) * 2004-10-25 2006-04-28 Fimopart Sa Drawbar for industrial truck, has guiding plate to guide free end of towing hook, by traction force exerted by industrial tow tractor, between cross-member and front stopper that immobilizes hook in hitching standby position
EP1852282A1 (en) * 2006-05-05 2007-11-07 LKE Gesellschaft für Logistik- und Kommunikations- Equipment MbH Hitching device for a trailer
EP1927485A1 (en) * 2006-12-01 2008-06-04 Fimopart Drawbar for an industrial truck, corresponding truck and method for installing the drawbar on this truck
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Publication number Priority date Publication date Assignee Title
FR2996496A1 (en) * 2012-10-09 2014-04-11 Renault Sa Device for coupling towing- and tractor drawn vehicles, has indexing elements including retaining elements that co-act with fixing elements integrated with drawbar or attaching part in blocking state when drawbar is in active configuration
EP3023316A1 (en) * 2014-11-21 2016-05-25 K. Hartwall Oy AB Tow bar assembly and dolly comprising the same
WO2016079377A1 (en) * 2014-11-21 2016-05-26 K. Hartwall Oy Ab Tow bar assembly and dolly comprising the same
US10118450B2 (en) 2014-11-21 2018-11-06 K. Hartwell Oy Ab Tow bar assembly and dolly comprising the same
DE102016013725A1 (en) * 2016-11-17 2018-05-17 FM SYSTEME FÖRDER- UND MONTAGETECHNIK Schmalzhofer GmbH Device for fixing a movable transport device and / or for coupling with units and traction devices of a transport system
US10562362B2 (en) * 2017-12-21 2020-02-18 Target Brands, Inc. Cage to cage locking mechanism
US11338834B2 (en) * 2018-07-23 2022-05-24 Pietro Laudani Lowered bidirectional trolley

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